Structure-assisted redesign of a protein-zinc-binding site with femtomolar affinity.
Ippolito, J.A., Baird Jr., T.T., McGee, S.A., Christianson, D.W., Fierke, C.A.(1995) Proc.Natl.Acad.Sci.USA 92: 5017-5021
- PubMed: 7761440 
- Primary Citation of Related Structures:  
- PubMed Abstract: 
We have inserted a fourth protein ligand into the zinc coordination polyhedron of carbonic anhydrase II (CAII) that increases metal affinity 200-fold (Kd = 20 fM). The three-dimensional structures of threonine-199-->aspartate (T199D) and threonine-19 ...